They went too ambitious with their plans, ie: announcing they were doing the full game and multiplayer, and stating they would release it as one full package.

I said this back when it was first announced, I'll say it again...they should have focused on completing and releasing sections of the game at a time, not trying to recreate the full game + multiplayer in one shot.

A perfect example they should have learned from is the Dark Forces remake mod and the mod dev hell that has gone through. I think it's been almost 10 years, if not more. But looking at their website, sounds like they actually may be close to finally completing it.